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Posted to issues@impala.apache.org by "Tim Armstrong (Jira)" <ji...@apache.org> on 2019/10/02 22:43:00 UTC

[jira] [Created] (IMPALA-8999) Revisit scheduler heuristics for parallelism

Tim Armstrong created IMPALA-8999:
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             Summary: Revisit scheduler heuristics for parallelism
                 Key: IMPALA-8999
                 URL: https://issues.apache.org/jira/browse/IMPALA-8999
             Project: IMPALA
          Issue Type: Sub-task
          Components: Distributed Exec
            Reporter: Tim Armstrong
            Assignee: Tim Armstrong


We should do another pass over the scheduler to make sure that the logic makes sense for mt_dop.

There are some comments in scheduler.cc, e.g. talking about optimisations for UNION.



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